Roller for printing-presses



'L. LA TOURAND A. F. 'MUNNELL.

ROLLER FOR PRINTING PRESSES.

APPLICATION FILED MAY 29, I919.

Patented June 29, 1920.

glwwmtozS Lee LAT? 14 A gmu nen,

To all whom it inay mm I UNITED- STATES LEE LA 'roun. ann'u'ron sl my-mien, or. 012mm, NEBRASKA, ASSIGNORS or ONE 'PA NT OFFICE.

" ramp .ro wmnn slmn, or mama, nmmasxs.

Be it known that we, LEE La TOUR and ALTON F. 'MUNNELL, citizens of the United States, residin at Omaha, in thelcounty of Douglas and vented certain new and useful Improvements in Rollers for Printing-Presses, of

which the following is .a specification.

This invention relates to an improvement in inking rollers, .andhas for one of its objec'ts to provide inking rollers for printing presse'swhioh, while having an adequate degree of elasticity, will maintain its form re-' gardless of changes in temperature, and especially will not become softened by operation of friction during continued use or long runs. Other objects include the provision 1 of rollers which will be of lighter weight andimore durable than ordinary, and will not become flattenedv or depressed from a circular form in cross-section when inadvertently left u on the ink-plate or other hard surface. The invention includes the use of certain ingredients to bemixed, cal-' endered, and mounted upon'a core or shaft and to be subjected to heat while in a mold.

The invention is fully described herein and in the appended claims and is illustrated in the accompanying drawing wherein,- Figurel is a side View of the inking roller and Fig. 2 is a view of the same in transverse section.

In making the inking rollers we have used the following ingredients:

Aluminum flake 2 lbs. Ba'ryta 2 lbs. Lime %lb. Sulfur 3% lbs. Magnesia 4 lbs. Rubber, smoke-sheet, fine 34: lbs.- Rubber, smoke-sheet, coarse g lbs. oz..

Degras u The ingredients are mixed by any suitable means, and when thoroughly mixed the mass will have a consistency similar to that of bread dough, and ,themass is then calenw dere'd or rolled into' sheets of uniform thickness, the thickness not being important, but' we have prepared the sheets with 3 g of an inch in thickness in instances where the diameter of aroller was 2 inches.

The sheets are then applied to a shaft of tate of Nebraska, have inf s ammi Letters Patent. P t t -29, 1 2 npplicationiile'd lav-29,1919. Ser1a1 1Io.3Q0,768.

said sheets beingcompactly rolled thereon to provide a required diameter of a roller, and after being placed in a mold is sub-- jec ted, during a period'of 40 minutes to a degree of heat within a scale from 270 to 290 degrees; and when removed from the mold the roller will present a smooth, finished appearance or surface.

In the accompanying drawing, numeral 3 indicates a shaft, upon which the sheets 4 are compactly mounted before being placed in a mold to be subjected to heat for roducing the roller-.5, and it will be und zarstood that rollers of various diameters may be made, the-sheets being mounted thereon asdescribed; also it will be understood that the sheets may have a greater or lesser degree of thickness than mentioned, if desired.

While the proportions mentioned for the ingredients produce the best results and are preferred, certain changes, of course, are permissible. The amount-of rubber may be reduced 20 per cent. if desired, the proportion of the other ingredients remaining the same; also milk or anilin oil may be substitutedfor the degras,as a softener, andbaryta may be eliminated if desired, the otheringredients and their proportions remaining the same, and the proportions of the ingredients may be changed within ag' certain range, as expressed in the appended" claims. I

The advantages in the use of the ink roller 3 as described will be appreciatedsince any meltin or change in form from effects of heat Wlll be eliminated, this being a matter of importance, another feature of importance being that any wearing away of the convexed surface from long usage or high degree of} rotation will be practically avoidedyalso said surface will not become permanently flattened if allowedto lie upon I an ink-plate oifsimilar surface, and it is obvious that theflcomparativelylight weight provided for "these rollers is 'anadvantage.

Having fully, described our invention, what we claiin and desire secure by Let ters Patent is',-'-" 1 1. An-in king roller, comprising a shaft, 8. I

sheet wound compactly upon the shaft and subjected to avulcanizing heat, said sheet consisting of a part of the following in'- gredients 1b., sulfur,

almn1num"flake,2 lbs., baryti'r 2 lbsi,f1ime-,

3} lbs, magnesia, 4 lbs., rubber smoke-sheet, fine, 34 lbs, rubber smoke sheet, coarse 6 lbs. and degras 2 oz.

2. An inking roller, comprisi a shaft, a

a sheet wound upon the shaft and su jected to a heat approximately of 290 degrees, said sheet consisting of a part of the following ingredients vwhich include approximately, in-

weiighfljaluminum flake, 2 bs, lime, L 1b., sul ur, 3% lbs, magnesia, 4 lbs, rubber, 40 lbs, and a softening agent.

3. An inking roller comprising a shaft, a

sheet wound 'upon the shaftand subjected to I a vulcanizing eat, said sheet consisting of a part of the following mixed ingredients whieh jncludeapproximately, in weight.

aluminum flake, 2'lbs., baryta, 2 lbs, lime,

which include inj'=weight, mixed aluminum flake two parts, ba yta two parts,

lime one .part, sulfur three parts, magnesia fourparts, rubber forty parts and-degras one-tenth part.

In testimony whereof, we have aflixed our signatures in presence of two witnesses.

LEE LA TOUR.

ALTO-N F. MUNNELL.

Witnesses:

ARTHUR H. STURGES, HIRAM A. Simmons. 

